A. Murphree efficiency > point efficiency
B. Murphree efficiency < point efficiency
C. Murphree efficiency = point efficiency
D. Murphree efficiency ≠ point efficiency
Related Mcqs:
- Plate efficiency in a distillation column is reduced due to the ______________________ of liquid?
A. Entrainment
B. Foaming
C. Weeping & dumping
D. All A., B. & C. - The efficiency of a plate column will be maximum, when the flow is ideal __________________ the plate?
A. Across
B. Above
C. Both A. & B.
D. Neither A. nor B. - Experiments were conducted to determine the flux of a species A in a stagnant medium across a gas-liquid interface. The overall mass transfer co-efficient based on the liquid side for dilute systems for the above was estimated to be 4 × 10-3 kg mole/m2.s. The equilibrium data for the system is given as y = 2x. The flux across the interface (in kg mole/m2 .s) for bulk concentrations of A in gas phase and liquid phase as y = 0.4 and x = 0.01 respectively is _________________________?
A. 5.6 × 10-4
B. 8.5 × 10-4
C. 5.6 × 10-3
D. 8.5 × 10-3 - The ratio of Murphree plate efficiency to point efficiency is 1 in a ______________________ flow model?
A. Plug
B. Perfectly mixed
C. Both A. & B.
D. Neither A. nor B. - The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if___________________?
A. NSc = 1
B. NSc = NPr = NLe
C. NPr = NLe
D. NSc = NLe - H2S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H2S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in meters) corresponding to an operating line given by, y = 5x + 0.001 is ______________________?
A. 2.0
B. 1.56
C. 1.0
D. 0.56 - The suitable evaporator for concentration of foaming liquids is a ______________________ evaporator?
A. Long tube
B. Short tube
C. Vacuum
D. Falling film - Plate efficiency in a distillation column is reduced due to the ______________ of liquid?
A. Entrainment
B. Foaming
C. Weeping & dumping
D. All A., B. & C. - If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be _______________ percent?
A. 100
B. > 100
C. < 100
D. None of these - Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent ______________________?
A. A pure component
B. A binary mixture
C. A ternary mixture
D. Partially miscible ternary system
